Controller Kit 4From this point on,the parts will need to be soldered one at a time, as the height differences will not allow gravity to keep the parts against the card surface. The technique that I use to keep the parts properly against the board is to hold the part against the board with one hand, hold the soldering iron with the other, and let the solder hang off the side of the bench so that the board can be held in the proper position for soldering. Basically instead of the board being stationary,and the solder moved, the solder is stationary and you move the board, while using a spare finger to hold the part in position. I solder one lead of the part this way, then make any adjustment to the part position necessary, and solder the other leads with the board on the bench.
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Crystal clock, fuse holder, amp pot.
The crystal clock is the master timer for the system,One corner is sharp to designate pin one. Use the tack technique shown above to solder one lead, then solder the other three. The potentiometer should be mounted as shown on the photo, ignore the screw position shown on the silk screen, it is incorrect. The fuse holder should be soldered with the fuse out of the socket. |
installing the stand up resistors
In this step we will install the resistors that need to stand up. Simply bend one lead over the resistor body, so the two leads stick out the bottom, and solder into the board. the only cautions are to make sure that the bent leads do not touch each other, and of course that the resistors are in the correct location.
The 30.9K is now installed as part of the modifications shown in the next step, so disregard that part in the photo. |
Installing the 100pf and 0.001 Uf caps
You will notice that the smaller 100pf caps will not go right to the board.This is no accident, as this type of cap needs a space to prevent soldering from damaging the part. Push down gently, until you have about 3/16" gap, or the part is getting difficult to install further, then solder it in.
On the other caps, we have the opposite problem, as they fit so well, that you will need to use the tack one lead technique. Once you tack one lead, adjust the cap so it is straight, then solder the other lead. |
Installing the 0.1Uf caps
The same falling out issues with these, hold cap with one finger,solder one lead,adjust, place on bench, solder the other, then move on to the next. |
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